Improvement in fanning-mills



P. YOUNG.

.Improvement in Fanning-Mills. N0. Uli-,898, Patented Meu/16,1871:

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AmlP/lom-umocnAFH/c cow. Hasso/mis Measles) @anni dfi-im PETER YOUNG, 0F AUSTIN, MINNIESOTA.A

Letters Patent No. 114,898, dated May 16, 1871.

VIMPROVEMENT IN FANNING-MlLvLS.

The Schedule referred to tn these Letten Patent and making part of the lame.

:Improvements -in Fanning-Mills, of which the following is a specification.

ature and Objects of the Invention.

My invention relates t0 an improvement in tanningmills by the introduction of lan inclined step-sieve immediat-ely under the grain-hopper, made of either hard wood or thin metal, with steps every inch or 'three-fourths of an inch, inclined. inwardly, so that the wheat, from its greater weight, will, in its descent from. the hopper over each step, vfall inwardly through the inclined Yperforations inthe joint of each step of thek sieve, the fan being so constructed as to throw the blast upward through the holes of the sieve, blowing otf the oats and chatf over its entire length.

Also, to the introduction of a ,metallic case and spout, attached to the sieve immediately below the step-sieve, for the purpose of gathering and conveying-oif al1 the cockle and finer refuse in the wheat.

.Description of the Accompanying Drawing.

'Figure 1 represents a) side view of a fanning-mill embodying my invention. Figure-2 represents aview of the back end of the same.

General Description. The wheat is deposited in an ordinary fanning-mill hopper', A, on top, fromwhence it descends on the in.

clined step-sieve B underneath, the steps of which are about -an inch or three-fourths of an inch apart, about half that height, and inclined inwardly, with round Y holes in each joint.

means of the rod a, elbow-lever c, and springs d d the other end ofthe rod being attached tothe crank o on the shaft of the i'an, which is turned as in ordinary tanning-mills. J

After passing through thc inclined step-sieve B the wheat falls on the sieve C underneath, in its descent receiving the full blast from the fan f, in front, which blows oli' all oats andchai which may have passed through the inclined step-sieve B.

Underneath the sieve C is a metallic case, i, with a spout, k, at the lower end to receive and convey otf the cockie and finer refuse which escape the blast and drop through the sieve.

The wheat passes the entire length over this sieve, and in the rear drops over on the lower sieve D underneath, over which it again passes; becoming separated and freed from everything, drops into a box in front', as 'in ordinary fanning-mills, the last refuse being caught in the box E.

y Claims.

I claim as my invention- 1. The upper inclined step-sieve B, with the steps thereof inclined from their outer edges a' to their inner joint-s s, and provided with inclined perforations v, all constructed substantially in the mannerand for `the purpose hereinbefore set forth.

hs u PETER i k YOUNG. Witnesses:

OQHAYEs,

L. BouncAnD,

his JOHN X STUBGEON.

mark. 

